Is there a difference between 2/4 and 4/4@Tim: Yes, I agree with you that they can be equal in the sense of having a score in 2/2 with half noes as the beat is the same as having a score in 2/4 with quarter notes as the beats, but with half the tempo of the first score. What I mean is that does not make sence to say that a score that is written in 2/2 is played in 2/4. That is totally dependent on tempo, not time signature.